Compiler Software Engineer II — Core Toolchains

Cisco Systems, Inc; Austin (TX); On-site; USD 110,000 - 170,000; Full time

Job summary

Cisco Systems, Inc. is seeking a Compiler Software Engineer II to architect, implement, and optimize advanced compilation and debugging toolchains powering Cisco IOS-XE and related platforms.

You will work on LLVM/GCC backends, IR optimizations, and runtime diagnostics, with Python-based validation pipelines and CI/CD integrations. The role demands strong C/C++ expertise, knowledge of ARM64/x86 architectures, DWARF, GDB/LLDB, and experience with open-source toolchains.

Qualifications

• Proven proficiency in C and C++ (C++17/C++20) with strong foundations in systems programming.
• Experience with LLVM/GCC backends and IR development.
• Familiarity with GDB, LLDB, and DWARF debugging formats and object file structures.
• Background in compiler construction or toolchain development from research, academia, or industry.

Responsibilities

• Architect, implement, and optimize advanced compilation, code analysis, and debugging toolchains.
• Develop compiler transformations and runtime diagnostic tools for ARM64/x86 platforms.
• Build automated validation pipelines using Python and CI/CD frameworks.
• Contribute to open-source toolchains and improve backends and toolchain diagnostics.

Skills

C/C++

Systems programming

ARM64/x86

GDB/LLDB

Python

Open source toolchains

Education

Master's degree in CS/CE

Bachelor's degree in CS/CE

Tools

LLVM/Clang

GCC

LLD

DWARF/ELF

Job description

Cisco Systems, Inc. is seeking a Compiler Software Engineer II to architect, implement, and optimize advanced compilation and debugging toolchains powering Cisco IOS-XE and related platforms.

You will work on LLVM/GCC backends, IR optimizations, and runtime diagnostics, with Python-based validation pipelines and CI/CD integrations. The role demands strong C/C++ expertise, knowledge of ARM64/x86 architectures, DWARF, GDB/LLDB, and experience with open-source toolchains.